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Chapter 17 Gate Drive Unit (GDUV4)
MC9S12ZVM Family Reference Manual Rev. 1.3
Freescale Semiconductor
637
17.3.2.7
GDU Flag Register (GDUF)
Module Base + 0x0006
Access: User read/write
(1)
1. Read: Anytime
Write: Anytime, write 1 to clear flag
7
6
5
4
3
2
1
0
R
GSUF
GHHDF
GLVLSF
GOCIF[1:0]
0
GHHDIF
GLVLSIF
W
Reset
1
0
0
(2)
2. Out of power on reset the flags may be set
0
0
0
0
= Unimplemented
Figure 17-9. GDU Flag Register (GDUF)
Table 17-8. GDUF Register Field Descriptions
Field
Description
7
GSUF
GDU Start-up Flag — The start-up flag is set by hardware on the first clock edge after system reset deasserts.
Writing a logic “1” to the bit field clears the flag one bus cycle after writing “1”. If the flag is set all high-side FET
pre-drivers are turned off and all low-side FET pre-drivers are turned on. If the flag is cleared and there is no
error condition present all high-side and low-side FET pre-drivers are driven by the pwm channels.
0 High-side and low-side FET pre-drivers are driven by pwm channels
1 High-side FET pre-drivers turned off and low-side FET pre-drivers are turned on
6
GHHDF
GDU High V
HD
Supply Flag — The flag controls the state of the FET pre-drivers. If the flag is set and
GOCA1=0 the high-side pre-drivers are turned off and the low-side pre-drivers are turned on. If GOCA1=1 all
high-side and low-side FET pre-drivers are turned off. If the flag is cleared and no other error condition is
present the high-side and low-side pre-drivers are driven by the PWM channels. The flag is set by hardware if
a high voltage condition on HD pin occurs. The flag is set if the voltage on pin HD is greater than the threshold
voltage V
HVHDLA
or V
HVHDHA
. Writing a logic “1” to the bit field clears the flag.
0 Voltage on pin HD is less than V
HVHDLD
or V
HVHDHD
1 Voltage on pin HD is greater than V
HVHDLA
or V
HVHDHA
5
GLVLSF
GDU Low VLS Supply Flag — The flag controls the state of the FET pre-drivers. If the flag is set all high-side
and low-side pre-drivers are turned off. If the flag is cleared and no other error condition is present the high-
side and low-side pre-drivers are driven by the PWM channels. The flag is set by hardware if a low voltage
condition on VLS_OUT pin occurs. The flag is set if the voltage on pin VLS drops below the threshold voltage
V
LVLSA
. Writing a logic “1” to the bit field clears the flag.
0 VLS Supply is above V
LVLSD
1 VLS Supply is below V
LVLSA,
all high-side and low-side FET pre-drivers are turned off
4-3
GOCIF[1:0]
GDU Overcurrent Interrupt Flag — The interrupt flags are set by hardware if an overcurrent condition occurs.
The flags are set if the voltage on the overcurrent comparator input is greater than the threshold voltage V
OCT
.
If the GOCIE bit is set an interrupt is requested. Writing a logic “1” to the bit field clears the flag. If the GOCAx
bit is cleared all high-side FET pre-drivers are turned off and fault[4] is asserted. If GOCAx is set all high-side
and low-side FET pre-drivers are turned off and fault[2:0] are asserted.
0 Voltage on overcurrent comparator input is less than V
OCT
1 Voltage on overcurrent comparator is greater than V
OCT
Содержание MC9S12ZVM series
Страница 116: ...Chapter 2 Port Integration Module S12ZVMPIMV1 MC9S12ZVM Family Reference Manual Rev 1 3 116 Freescale Semiconductor ...
Страница 242: ...Chapter 7 ECC Generation Module SRAM_ECCV1 MC9S12ZVM Family Reference Manual Rev 1 3 242 Freescale Semiconductor ...
Страница 384: ...Chapter 10 Supply Voltage Sensor BATSV3 MC9S12ZVM Family Reference Manual Rev 1 3 384 Freescale Semiconductor ...
Страница 484: ...Chapter 13 Programmable Trigger Unit PTUV2 MC9S12ZVM Family Reference Manual Rev 1 3 484 Freescale Semiconductor ...
Страница 662: ...Chapter 17 Gate Drive Unit GDUV4 MC9S12ZVM Family Reference Manual Rev 1 3 662 Freescale Semiconductor ...
Страница 684: ...Chapter 18 LIN Physical Layer S12LINPHYV2 MC9S12ZVM Family Reference Manual Rev 1 3 684 Freescale Semiconductor ...
Страница 740: ...Chapter 19 128 KB Flash Module S12ZFTMRZ128K512V2 MC9S12ZVM Family Reference Manual Rev 1 3 740 Freescale Semiconductor ...
Страница 756: ...Appendix A MCU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 756 Freescale Semiconductor ...
Страница 772: ...Appendix D LINPHY Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 772 Freescale Semiconductor ...
Страница 776: ...Appendix E GDU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 776 Freescale Semiconductor ...
Страница 788: ...Appendix I MSCAN Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 788 Freescale Semiconductor ...
Страница 790: ...Appendix J Package Information MC9S12ZVM Family Reference Manual Rev 1 3 790 Freescale Semiconductor ...